Mathias l



- 'M. L. SHU STER. i INSERTIBLE SAW TOOTH.

No. 542,378. Patented July 9, 18 95.

U I ED- STATEs PATENT OFFICE.

MATI-IIAS SHUSTER, 0E MINERAL POINT, OHIO, ASSIGNOR or ONE-HALF TO ELMERc. JESSE, OF SAME PLACE.

INSERTIBLE sAw- T ooT|-|.

SPECIFICATION forming part of Letters Patent No. 542,378, dated July 9,1895.

Application filed April 12, 1895.

To all-whom it may concern:

Be it known that I, MATHIAS L. SHUSTER, a citizen of the United States,residing at Mineral Point, in the county of Tuscarawas and State ofOhio, have invented certain new and useful Improvements in InsertibleSaw-Teeth and I do hereby declare that the following is a full, clear,and exact description of the same, reference being had to the annexeddrawings, making a part of this specification, and to the letters ofreference marked thereon, in which I Figure 1 is a view showinga portionof the blade and illustrating the teeth properly attached thereto. Fig.2 is a detached view of a tooth provided with two cutting-points. Fig. 3is a view showing a portion of a saw-blade withthe teeth removed. Fig. 4is a detached view of a tooth providedwith a single cutting-point. Fig.5 is a transverse section, through line 00 01:, Fig. 1. Fig. 6 isadetached view of one of the wedges or keys.

The present invention has relation to in-. sertible saw-teeth,especially designed for what is known as cross-cut saws, and it consistsin the novel construction hereinafter described, and particularlypointed out in the claims. 1

Similar letters of reference indicate corresponding parts in all of thefigures of the drawings.

In the accompanying drawings, A represents the saw-blade, which isconstructed in the ordinary manner, reference being had to attaching andsecuring the insertible teeth as hereinafter described.

To the bladeA and at the ends thereof are attached handles, such as a,which handles may be attached in any desired manner, inasmuch as thehandles form no particular part of the present invention. The blade A isprovided with the desired number of recesses b,- which recesses extendinto the blade, sub stantially as illustrated'in Figs. 1 and 3, and forthe purpose hereinafter described. Between the recesses b are. locatedthe arms 0, which arms are provided with the shoulders d.

The teeth B and O are each provided with the openings e, which openingsare formed of a size to correspond with the size of the heads f, saidheads being formed integral with the Serial No. 545,540. (No model.)

arms 0. The teeth B and O are each provided with the curved arms g, theinner edges of which are provided with the V-shaped grooves h, whichgrooves receive the corresponding V-shaped ridges h, formed upon theedges of the arms 0, which edges are curved to correspond with thecurvature of the arms g. The lateral edges of the arms g are providedwith the V-shaped ridges 70, said ridges being for the purpose ofreceiving the V-shaped grooves formed in the edges of the keys or WedgesD, which keys or wedges are for the purpose hereinafter described. Theinner edges of the arms g are provided with the lugs 70, said lugs beingfor the purpose of engaging the shoulders d, as illustrated in Fig. 1.

In use the saw-blade A is originally formed with the recesses b and thearms, by which arrangement the teeth B and O can be attached to theblade. The teeth B and O are placed in their relative position byspringing the arms g over the heads f, and after the arms g have beenbrought past the shoulders d, said arms will assume their normalposition, thereby bringing the lugs it into engage ment or contact withthe shoulders d.

It will be understood that the arms g of the teeth B and C will requirebut little springing to pass the headsf. Before the teeth B and O areplaced in position upon the sawblade proper the wedges or, keys D areentered into the recess b, and after the teeth have been placed inposition said wedges are forced between the arms g of two adjacentteeth, thereby securely fastening the teeth.

For the purpose of assisting in holding the keys or wedges D in properposition and at the same time preventing any accidental displacement ofthe keys or wedges and the teeth, the wedges may be, and preferably are,magnetized. v

For the purpose of assisting in holding the teeth in proper position andpreventing any lateral or tilting movement of the teeth, the heads f areprovided with the V-shaped grooves 10 which grooves receive the V-shaped ridges 10 In the description I have described the location of thevarious V-shaped grooves and ridges, but it will be understood that the10- cations of said ridges and grooves may be transposed withoutdeparting from the nature of my invention.

Having fully described my invention, what I claim as new, and desire tosecure by Letters Patent, is-

1. The'combination of the blade A, provided with the recesses 1),extended into the blade, the arms 0 formed integral with the blade, andprovided with the shoulders cl and the headsf, the teeth provided withthe openings e the lugs 7t and the curved arms 9, provided with grooves71, and the keys or wedges D located between the teeth, substantiallyas' and for the purpose specified.

2. The combination of the blade A, pro-

